Supercritical fluid

Xem 1-8 trên 8 kết quả Supercritical fluid
  • Gas chromatography – chromatography using a gas as the mobile phase and a solid/liquid as a stationary phase – In GC, the analytes migrate in the gas phase, so their boiling point plays a role – GC is generally applicable to compounds with masses up to about 500 Da and with ~60 torr vapor pressure at room temp (polar functional groups are trouble) Supercritical fluid chromatography – chromatography using a supercritical fluid as the mobile phase and a solid/liquid as a stationary phase – In SFC, the analytes are solvated in the supercritical fluid – SFC is applicable to a much ...

    pdf22p qdung92ct 03-07-2012 49 12   Download

  • Natural product isolation, initial and bulk extraction, supercritical fluid extraction, an introduction to planar chromatography, crystallization in final stages of purification,... As the main contents of the document "Natural Products Isolation". Invite you to consult for additional documents for the academic needs and research.

    pdf529p nguyenhongchung 25-11-2015 12 3   Download

  • Shiitake mushroom contains several therapeutic actions such as antioxidant and antimicrobial properties, carried by the diversity of its components. In the present work, extracts from shiitake mushroom were obtained using different extraction techniques: high-pressure operations and low-pressure methods. The high-pressure technique was applied to obtain shiitake extracts using pure CO2 and CO2 with co-solvent in pressures up to 30 MPa.

    pdf8p the_eye_1991 18-09-2012 29 5   Download

  • Khái niệm về lưu chất siêu tới hạn (supercritical fluid) Lưu chất siêu tới hạn được định nghĩa là trạng thái vật lý của một chất nào đó ở điều kiện nhiệt độ và áp suất cao hơn nhiệt độ tới hạn và áp suất tới hạn. Thật ra định nghĩa ban đầu về lưu chất siêu tới hạn còn có thêm điều kiện áp suất phải nhỏ hơn giá trị có thể biến đổi chất đó sang trạng thái rắn.

    pdf7p halinh 24-03-2011 91 25   Download

  • Petroleum mixtures consist primarily of relatively unreactive complex hydrocarbons covering a wide boiling range. Such mixtures are difficult to separate by most analytical techniques. Therefore, the petroleum industry has for many years played a leading role in the development of chromatographic methods of analysis. Since the last book specifically concerned with chromatographic analysis of petroleum appeared 15 years ago, numerous advances have been made including developments in liquid and supercritical fluid chromatography, ...

    pdf453p trua_nang 22-04-2013 45 13   Download

  • Reactive liquid-liquid extraction of inorganic acids with amines and effect of solvating diluents; Liquid extraction of tall oil from wastewaters of paper industry • Supercritical fluid extraction of natural products; Enzymatic reactions in supercritical CO2; Solubilities of liquids and solids in dense CO2 with entrainer • Relation between the morphology and application properties of polymer catalysts and adsorbents • Study of the permeation and pervaporation of volatile organic substance (propan-1-ol, toluene) • Observation of the competitive adsorption on Vycor glass membr...

    pdf66p lulanphuong 22-03-2012 40 11   Download

  • 15 Biodiesel Production With Supercritical Fluid Technologies Shiro Saka and Eiji Minami contents Abstract.................................................................................................................. 213 15.1 Introduction ................................................................................................. 214 15.2 Supercritical Fluid ...................................................................................... 214 15.3 One-Step Supercritical Methanol Method (Saka Process) ......................... 215 15.

    pdf11p meomeongon 13-01-2012 32 8   Download

  • Ideally, multiple traits would be considered for selection, such as milk yield, AFC and longevity, to consider both production and functionality. Such a plan might be difficult to implement quickly, so, for more simplicity, evaluation could initially be based on ‘likeability’ scores assigned by the farmer. To evaluate likeability, farmers would be asked to assign an animal a score of from 1 to 5, where 1 and 5 indicate an extremely poor or good cow, respectively. Such a trait would comprise a mixture of productivity, reproduction and health.

    pdf15p conduongdinhmenh 07-05-2013 23 4   Download

Đồng bộ tài khoản